One that just works and doesn't need updated firmare. Only cost $40.00 and
probably works just as good as your $3,000.00 bit of kit.
I think you misunderstand - my $3k unit is a firewall, not a cheap NAT
Router, and the router doesn't come close to doing what the firewall
does.
I always install a NAT Appliance for any residential user, never have
them direct connected, but I never install the 604 that you've used,
they were problematic from day one and I just stopped installing them.
Oh, and updated firmware, that's about every device on the market, as
any vendor that cares will product new firmware when a flaw is detected,
but, the 604 has not been fixed since 2003, so I would expect it to have
issues.